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# TMC RESEARCH CORPORATION
PCI48IX (VER. 1.0)
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set Intel
Max. Onboard 128MB
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (3)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+------------+-------------------+-----------|
| IDE interface | J2 | IDE interface LED | J3 (pins |
| LED | | | 10 - 20) |
|---------------+------------+-------------------+-----------|
| Speaker | J3 (pins 1 | Power LED & | J3 (pins |
| | - 4) | keylock | 11 - 15) |
|---------------+------------+-------------------+-----------|
| Reset switch | J3 (pins 9 | 32-bit PCI slots | SL1 - SL3 |
| | - 19) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select monochrome | JP1 | Open |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP1 | Closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS mode select normal | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS mode select recovery | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS write protect | JP3 | pins 1 & 2 |
| | disabled | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS write protect enabled | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP7 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP7 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 512K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 2M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 66MB | (2) 8M x 36 | (2) 256K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TAG CONFIGURATION |
|------------------------------------------------------------|
| Size | TAG (U18) | TAG (U35) | TAG (U36) |
|------------+---------------+---------------+---------------|
| 64KB | (1) 8K x 8 | (1) 64K x 1 | (1) 64K x 1 |
|------------+---------------+---------------+---------------|
| 128KB | (1) 8K x 8 | (1) 64K x 1 | (1) 64K x 1 |
|------------+---------------+---------------+---------------|
| 256KB | (1) 8K x 8 | (1) 64K x 1 | (1) 64K x 1 |
+------------------------------------------------------------+
+-----------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|-----------------------------------------------------------------|
|Size | RA1 | RA2 | RA3 | RA4 | RA5 | RA6 |
|-----+---------+---------+---------+---------+---------+---------|
|64KB | Not | Not |Installed| Not | Not |Installed|
| |installed|installed| |installed|installed| |
|-----+---------+---------+---------+---------+---------+---------|
|128KB| Not |Installed| Not | Not |Installed| Not |
| |installed| |installed|installed| |installed|
|-----+---------+---------+---------+---------+---------+---------|
|256KB|Installed| Not | Not |Installed| Not | Not |
| | |installed|installed| |installed|installed|
+-----------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | RN14 | RN15 | RN16 |
|---------------+--------------+--------------+--------------|
| 80486SX | Not | Not | Installed |
| | installed | installed | |
|---------------+--------------+--------------+--------------|
| ODP486SX | Not | Installed | Not |
| | installed | | installed |
|---------------+--------------+--------------+--------------|
| 80487SX | Not | Installed | Not |
| | installed | | installed |
|---------------+--------------+--------------+--------------|
| 80486DX/DX2 | Installed | Not | Not |
| | | installed | installed |
|---------------+--------------+--------------+--------------|
| Pentium | Not | Installed | Not |
| Overdrive | installed | | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP4 | JP5 |
|--------------------+-------------------+-------------------|
| 25MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 33MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50iMHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI IRQ CONFIGURATION |
|------------------------------------------------------------|
| IRQ | RN17 | RN18 | RN19 |
|------------+---------------+---------------+---------------|
| IRQ5 | Installed | Not installed | Not installed |
|------------+---------------+---------------+---------------|
| IRQ11 | Not installed | Installed | Not installed |
|------------+---------------+---------------+---------------|
| IRQ15 | Not installed | Not installed | Installed |
+------------------------------------------------------------+